Ernst kloss



(N0 M-od el.)

E. KLOSS.

ELECTRICAL TEMPERATURE ANNUNOIATOR.

No. 519,634. Patented May 8, 1894.

UNITED STATES PATENT Genres ERNST KLoss', or STETTIN, GERMANY.

ELECTRICAL TEMPERATURE-ANNUNCIATOR.

SPECIFICATION forming part of Letters Patent No. 519,634, dated May 8,1894,

Application filed December 22, 1893. Serial No. 494,478- (No model.)

To aZZ whom it may concern: I

Be it known that I, ERNST KLOss, a subject of the King of Prussia,German Emperor, and a resident of Stettin, in the Kingdom of Prussia,German Empire, have invented certain new and useful Improvements inElectrical Temperature-Annunciators, of which the following is an exactspecification.

My invention refers to electrical temperature-annunciators, in which airor another gas inclosed within a metallic casing is expanded by theinfluence of the temperature of the outer air on said casing, and inwhich a diaphragm forming one side or bottom of the casing, is lifted bysaid expansion, so that by this movement an electric contact or circuitrespectively may be closed; and my improvements in such electricaltemperatureannunciators relate to the combination of said closedgas-container, and of a contact-piece fixed to the center of thediaphragm of the same, with two contact-screws, the ends of which are ofconical shape, and which may be moved against or from the saidcontactpiece in planes parallel to that of the diaphragm, so that, onaccount of the conicalness of the ends of the two screws, the distancebetween them and the fixed contact-piece may be altered or may beadjusted to annunciate a maximum-temperature as well as a mlnlmum one. I

In order to make my invention more clear, I refer to the accompanyingdrawings,in which similar letters denote similar parts throughout thedifferent views, and in which- Figure 1 shows a side-view of theimproved annunciator, the casing being partly'opened. Fig. 2 shows theupper-view of the same, and Fig. 3 shows how the binding-screws of theannunciator are connected with an alarm-bell, a battery and anindicator.

The mode of construction shown in the above-named figure is as follows:

The casing containing the air or gas is formed by the ring a, thecorrugated or undulated bottom a, and by the diaphragm a The latter hasfixed to its center-part the column b, which at its end carries the ringI) with the piece 0 of platina-wire. A doubleangular strip (1 fixed toring a, carries two isolated angular supports e e for the twocontact-screws ff the vertical parts of said supports forming at thesame time bindingclamps for the connection with the Wires g 9, Fig. 3,which latter conduct the current to 5 5 the indicator h. The shanks ofsaid screws ff extend in opposite directions, and they are arranged indifferent horizontal planes, but in one vertical plane, so that theirconical ends ff are one over the other. The position of the fixedcontact-piece b with its ring I) and the'platina-wire c is such, thatthe latter is directly between the conical ends of the screws f f andthe distance between the platina and each of the conical heads f f maybe altered bya corresponding movement,

of one or the other screw or of both of them,

so that the contact occurs sooner or later just as predetermined.

The maximum or minimum-temperature, at which the one or the othercircuit shall be closed, may be predetermined by scales f on thesurfaces of the screw-heads, and by hands (1' fixed to strip d, butisolated from the same. Suppose now, the apparatus shall annunciate amaximum-temperature of 50 and a minimum-temperature of 20, the heads ofthe screws f f will be turned then so that the hand belonging to thescrew f is over the number 50, and the other hand over the num- 8o ber20 of the respective scales. As long as the temperature does not reacheither of those limits, the platina-contact 0 will not touch either ofthe conical points f or f If, however, the temperature has risen to themaximum or fallen to the minimum respectively, the column b b 0 willcome in contact either with point f of screw f, or with point f of screwf The electric current is generated by a battery 1', Fig. 3, one pole ofwhich is 0 connected by wire 9 with the electric indicator h, the otherpole being connected by wire 9 with a binding-clamp 6 attached to thecasing. An electricbelllcisinserted into wire g for the purpose ofcalling attention 5 to the indicator h if one or the other of theapparatus of the same has been operated by a closure of one or the othercircuit.

Having thus described the nature of this invention, What I desire tosecure by Letters no Patent of the United States is 1. In an electrictemperature-annuuciator with a casing closed by a diaphragm, andcontaining gas, the combination with a projection fixed to saiddiaphragm, and adapted to close an electric circuit, of an adjustablescrew arranged parallel or nearly parallel to the diaphragm, said screwforming a cone at its end, adapted to limit the movements oi saidprojection, for the purpose as described.

2. In an electric temperature-annunciator with a casing closed by adiaphragm, and containing gas, the combination with a projection fixedto the diaphragm in a normal position, and adapted to close an electriccircuit when being moved in one direction and another electric circuitwhen being moved in the other direction of two adjustable screws formingcones at their ends, and being arranged parallel or nearly parallel tothe diaphragm, one cone being adapted to limit the movements of saidprojection in one direction, the other cone being adapted to limit saidmovements in the otherdirection, for the purpose as described.

3. In an electric temperature'annunciator with a casing to closed by adiaphragm, and containing gas, the combination with a pro jection I)fixed to the centerot the diaphragm a and having a head-ring b, of twoadjustable contact-screws ff forming cones ff at their ends, and beingarranged parallel to the diaphragm in difi'erent planes, cone f catchinginto ring Z), and being adapted to limit the downward movement of thesame, cone f extending over ring I), and being adapted to limit theupward movement of the same, the screwsff being held by binding clamps ee secured to, and insulated from, a strap d fixed to the casing,substantially as described.

In testimony whereof I have signed this specification in the presence oftwo subscribing witnesses.

ERNST KLOSS.

Witnesses:

E. MAY, 1 W. KIOKBUSOH, Jr.

